Stock futures were cautiously higher on Wednesday morning as investors awaited the afternoon release of Federal Reserve minutes, an insight into the central bank's thinking ahead of its next meeting in June. 

S&P 500 futures were up 0.04%, Dow Jones Industrial Average futures were up 0.05%, and Nasdaq futures grew 0.15%.

The central bank opted to leave rates unchanged at its meeting on May 2-3, though signaled a willingness to move on rates sooner than later. Members of the Federal Open Market Committee noted that economic growth had slowed, though fundamentals remained solid. The committee viewed slowing growth in the first quarter as transitory. Meeting minutes could also signal when the Fed could begin reducing its $4.5 trillion balance sheet. 

Markets already have high expectations for an interest rate increase at the next meeting of the Federal Open Market Committee, the second of three expected rate increases this year. Wall Street has priced in a nearly 79% chance of a 25-basis-point increase to the federal funds rate when the FOMC meets June 13-14, according to CME Group fed funds futures.

Also on the economic calendar Wednesday, the FHFA House Price Index for March is set for 9 a.m. EDT, existing home sales for April will be released shortly after market open, while the Energy Information Administration's weekly petroleum status report is scheduled for mid-morning. 

Moody's lowered the credit rating for China, the world's second-largest economy, amid concerns for rising debt levels and slowing growth. Moody's clipped China's rating by one notch, taking it to A1 from a previous grade of Aa3, marking the country's first downgrade in nearly 30 years.

The credit agency said the new rating outlook is stable, however, and that the country remains resilient to negative shocks and that growth is likely to remain comparably strong in the near-term. However, Moody's said the downgrade "reflects the expectation that China's financial strength will erode somewhat over the coming years, with economy-wide debt continuing to rise as potential growth slows."

Intuit (INTU - Get Report) increased 7% in premarket trading after exceeding analysts' estimates on the top- and bottom-line over its third quarter. Earnings of $3.90 a share came in 3 cents above estimates. Revenue increased 10.4% to $2.54 billion and exceeded consensus by $40 million. Adjusted fourth-quarter earnings are expected to come in at 16 cents to 18 cents a share.

Tiffany & Co. (TIF - Get Report) tumbled 5% after reporting a surprise decline in same-store sales over its recent quarter. The jewellery retailer reported a 3% decline in worldwide same-store sales, a surprise to analysts looking for a 1.6% increase. Earnings of 74 cents a share exceeded consensus by 4 cents, while revenue of $899.6 million fell short of an analyst target of $914.7 million. 

Lowe's (LOW - Get Report) declined 4% before the bell after falling short of earnings and revenue estimates over its recent quarter. Adjusted earnings of $1.03 a share grew from 87 cents a year earlier, though came in below analysts' expectations for $1.06 a share. Revenue of $16.86 billion narrowly missed estimates of $16.95 billion. Same-store sales increased 1.9% over the quarter.

Bunge (BG - Get Report)  retreated 5% on Wednesday morning after noting that it wasn't engaged in "business combination discussions" with Glencore (GLNCY) . Shares had spiked more than 16% on Tuesday on reports of merger discussions. "Bunge is committed to continuing to execute its global agri-foods strategy and pursuing opportunities for driving growth and value creation," the company said in a brief statement late Tuesday.  

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